ITIL Service Support


• ITIL Service Desk
• ITIL Incident Management
• ITIL Problem Management
• ITIL Configuration Management
• ITIL Change Management
• ITIL Release Management

  ITIL Service Delivery


• ITIL Service Level Management
• ITIL Availability Management
• ITIL Capacity Management
• ITIL Financial Management
• ITIL Service Continuity Mgmnt.
• ITIL Security Management

  ITIL Stuff


• ITIL Organisations
• ITIL Links
• ITIL FAQ

Capacity Managment - keeping balance.

         In this article we will explain deeper the important term of the Capacity Management – 'the balance'. The balance between cost and capacity seems to be the basic condition of effective IT running just as we have previously shown in the example in Objectives of Capacity Management article.
The Capacity Management process should check whether the capacity of the IT resources meet the needs of the business and should match that capacity with the needs. In other words the IT resources like the hardware, software should cost adequately to the business needs. You don’t have to buy the newest Adobe Photoshop to make a basic graphic, or you do not need the latest super-effective PC to maintain a little database. On the other hand, If the logs of your client's system should be stored 2 years and they keep growing by 1GB every month you should provide disk capacious enough to meet the future state. It is quite obvious that parallel to the capacity increase you should pay more for that growth. Remember however that after some point of that increase capacity increase the expenditure starts to grow dramatically which means that the dependency between capacity and growing cost becomes nonlinear. So further increase of the capacity is not cost effective - see Picture. 1



Picture 1.



          The capacity should identify the optimal point of balance between cost and capacity axes. After identification the proper limitations to the cost or capacity should be introduced.

Added: 2008-07-17